| Co-Investigator(Kenkyū-buntansha) |
SAITO Shoichi Wakayama University, Faculty of Systems Engineering, Assistant Professor, システム工学部, 講師 (70304186)
UEHARA Tetsutaro Kyoto University, Faculty of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (20273485)
JOE Kazuki Nara Women's University, Faculty of Science, Professor, 理学部, 教授 (90283928)
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| Research Abstract |
The main purpose of this research project is to develop a total system for parallel processing program developing environment ; especially an automatic parallelizing compiler and a software distributed shared memory (SDSM) system as its runtime support system. This compiler receives Fortran77 source programs and generates corresponding parallelized C programs, as the object codes, which are executed on commodities PC/WS clusters equipped with our SDSM system as a representative of distributed memory parallel architecture. In each object code, our compiler embeds appropriate primitive functions to control the SDSM system, for example, to send/receive data and synchronize several (all) PCs, in adequate places of object C programs for their parallel execution..
For the dependence analysis module of our compiler, we have newly designed and proposed a practical data dependence analysis method which is combining the established ones, i.e. GCD Test, Banerjee Test, and Separability Test, with our original method which is also combined basically with both linear programming method (Simplex method) and exhaustive integer solution search. As the results of several evaluation experiments, it is clarified that our new method can analyze exactly with almost the same ability of the famous exact test, Omega Test, in view of the analyzable patterns of complexity of the given subscript expressions. Moreover in general cases, our methods can analyze more than or equally rapidly comparing with Omega Test.
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